| High-resolution sonography of the normal extrapelvic vas deferens. | |
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MedLine Citation:
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PMID: 19546325 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to determine the reliability of sonographic visualization of the normal extrapelvic vas deferens and to analyze its appearance and dimensions. METHODS: Scans of the scrotum and spermatic cords were obtained in 25 fertile volunteers. Identification of the vas deferens was attempted bilaterally in the scrotal, suprascrotal, and prepubic segments in all volunteers. When possible, the total thickness and the diameter of the lumen were measured. Visualization and dimensions were correlated with the body mass index (BMI) and abstinence interval. RESULTS: All segments of the vas deferens were identified bilaterally in all volunteers. In all cases, it appeared as an anechoic or very hypoechoic tubular structure that was noncompressible and contained no detectable blood flow. It was convoluted inferiorly and became straight as it progressed from the scrotum to the suprascrotal and prepubic segments. The lumen was seen in the suprascrotal segment in all of the volunteers except the one with the highest BMI. The total thickness of the vas ranged from 1.5 to 2.7 mm (mean, 1.89 mm). The lumen of the vas ranged from 0.2 to 0.7 mm (mean, 0.43 mm). There was no correlation between the luminal diameter and the abstinence interval. CONCLUSIONS: The extrapelvic portion of the vas deferens is reliably visualized sonographically. Its appearance is characteristic and reproducible. The lumen can be measured in almost all cases. |
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Authors:
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William D Middleton; Nirvikar Dahiya; Cathy K Naughton; Sharlene A Teefey; Cary A Siegel |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 28 ISSN: 1550-9613 ISO Abbreviation: J Ultrasound Med Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-06-23 Completed Date: 2009-07-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: United States |
Other Details:
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Languages: eng Pagination: 839-46 Citation Subset: IM |
Affiliation:
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Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri 63110, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Fertility Humans Linear Models Male Middle Aged Questionnaires Scrotum / ultrasonography Sensitivity and Specificity Spermatic Cord / ultrasonography Ultrasonography, Doppler, Color Vas Deferens / anatomy & histology, ultrasonography* Vasectomy |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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